4.4
(659)
3,953
hikers
175
hikes
Hiking in Réserve Naturelle Du Marais De Lavours offers access to one of Western Europe's last large continental marshes, spanning 474 to 500 hectares at the foot of the Grand Colombier massif and bordering the Rhône River. The terrain features a diverse mosaic of wet meadows, dense reed beds, and significant peat bogs, supported by loamy, clay, and peaty soils. A 1.2 to 1.5-kilometer wooden path on stilts provides accessible passage through the marsh, offering views of its unique flora…
Last updated: July 9, 2026
4.7
(6)
79
hikers
27.9km
10:06
1,430m
1,430m
Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
4.6
(17)
67
hikers
14.2km
04:53
660m
660m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

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4.6
(8)
115
hikers
27.9km
09:26
1,330m
1,330m
Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(2)
6
hikers
7.85km
01:59
20m
20m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.0
(2)
26
hikers
11.4km
05:46
1,050m
1,040m
Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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Popular around Réserve Naturelle Du Marais De Lavours
A very aerial viewpoint with a magnificent view of the Rhône and Lake Bourget.
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Culoz station is served daily by numerous regional trains (TER) from the Auvergne-Rhône-Alpes region. It marks the arrival point of the Grandes Traversées du Jura (Great Crossings of the Jura).
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Nice hotel in Culoz. We stayed there on our long-distance hike from Tarifa (Spain) to Switzerland and can highly recommend the accommodation.
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Intersection near the Roche de Chanduraz in the Grand Colombier massif offering a view of Lake Bourget.
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Gigantic Roche Percée located in the very steep slopes of the south of the Massif du Grand Colombier.
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Magnificent advance towards the south offering an incredible panorama of Lake Bourget, the Rhône and the Marais de Lavours nature reserve. Located to the south of the Massif du Grand Colombier, the end of this advance is however not accessible.
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Between the Grand Colombier massif and the Rhône, incredible panoramas from the vineyards and the bends, a surprising historic district to visit during guided tours and an ideal body of water to cool off after a bike ride.
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The reserve offers a diverse range of trails, from easy, nearly flat paths through the marshland to more challenging routes with significant elevation gain towards the Grand Colombier massif. You'll find options suitable for various fitness levels, including a unique 1.2 to 1.5-kilometer wooden path on stilts that traverses the heart of the marsh.
Yes, the Réserve Naturelle Du Marais De Lavours is notably inclusive. A key feature is the 1.2 to 1.5-kilometer wooden path on stilts, specifically designed to be accessible for everyone, including individuals with reduced mobility and those with visual impairments, featuring Braille information. This path allows for an easy, flat experience through the marsh.
The reserve is a mosaic of wet meadows, dense reed beds, and significant peat bogs. You can observe rare flora like carnivorous plants and orchids. Along the trails, particularly the stilted path, educational panels and observatories offer insights into the marsh's ecology and provide opportunities for wildlife viewing. The reserve is also at the foot of the Grand Colombier massif, offering varied landscapes.
The reserve is a haven for wildlife, with over 4,000 species recorded. Birdwatchers can spot species such as the Curlew, Marsh Harrier, Common Snipe, and the rare Bluethroat, especially during migration. The area is also rich in insects, including distinctive 'Maculinea' blue butterflies, and mammals like wild boar, roe deer, beaver, fox, and red deer.
Yes, the reserve features 'La Maison du Marais' (House of the Marsh), a discovery center with modern and interactive exhibits detailing the marsh's fauna, flora, history, and formation. It also serves as an information point, nature store, and refreshment bar, and organizes guided tours and activities.
To preserve the delicate ecosystem of the Réserve Naturelle Du Marais De Lavours, dogs are unfortunately prohibited on the trails and within the reserve.
Access to the reserve is free, and a designated parking area is available at the entrance of Aignoz, making it convenient for visitors to start their exploration.
The trails in Réserve Naturelle Du Marais De Lavours are highly rated by the komoot community, with an average score of 4.5 stars from nearly 600 reviews. Hikers often praise the unique marshland scenery, the accessibility of the stilted path, and the rich opportunities for wildlife observation.
While the marsh itself offers easy, flat walks, the surrounding area provides more challenging options. For instance, the Cascades de la Magnine – Grand Colombier Summit loop from Culoz is a difficult 28.8 km trail with significant elevation changes, leading through mountainous terrain.
Yes, a popular moderate option is the Culoz – Cascades de la Magnine loop from Culoz. This 7.7 km route includes varied terrain and some elevation gain as it heads towards the Cascades de la Magnine.
The marsh is particularly vibrant during spring and autumn. Spring offers blooming flora and active bird migration, while autumn provides stunning colors and continued opportunities for birdwatching as the marsh serves as an important migratory stop. The accessible stilted path makes it enjoyable across many seasons.
To protect the fragile ecosystem, visitors are reminded that dogs are prohibited within the reserve, and picking plants is not allowed. Please stay on marked paths to minimize disturbance to the natural environment.


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